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习题练习:Elementary Particles

 作者: 王信东Wood 发布日期: 2025-10-07 21:48   总分: 21分  得分: _____________

答题人: 游客未登录  开始时间: 10月07日 21:48  切换到: 整卷模式

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1#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Give a reaction betweexkbgm2/ 1u vl0n two nucleons, similar to Eq. 32-4, that could produce a 0bl1gk/u2v mx$\pi^0$.
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2#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a proton is moving at very high speed, so that itswmw/x*dja6 m savrglas(f)i l110 0 3k kinetic energy is much greater than its rest eail 3x0s(mfwgr 1 wlas1 mj k6a*d/0v)nergy ($mc^2$), can it then decay via $p \to n + \pi^+$?  

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3#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
What would an "antiatom," made up of the antiparticles to the constituentsw.pcme, lzjr x+.uwist6 /) -r of normal atoms, consist of? What might happen if antimatter, made of such antiatoms, came in contact with our normal world c e6s/ )+- ,i.jr.mzwrwuplxtof matter?
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4#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
What particle in a decay signals the edpzje4oclkf aij 69*r 2 25ll-lectromagnetic interaction?
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5#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Does the presence of a neutrino among the decay products of a particle necess 38i0eeu35ezjamj9 wh arily mean teau30me 8 ihzj3j5e9w hat the decay occurs via the weak interaction? Do all decays via the weak interaction produce a neutrino? Explain.
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6#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Why is it that a neut6/ 4 rng:8(tonodvdc eron decays via the weak interaction even though the neutron and 8v/go(n:r 6d4d eonc tone of its decay products (proton) are strongly interacting?
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7#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Which of the four interactionsn utyl5 ayi k.g-rp ii:(2z/oc6vgu8xp0u38y (strong, electromagnetic, weak, gravitational) does an electron take part in? An-.ag6ix(t gi0v3u:uyi 8yk5cy/zl r82puop neutrino? A proton?
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8#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Check that charge and baryon number are conserved in each of the decays in Take(: )cc-l ra+ pq.whmble ccme(.:l+qp) -wk ahr32-2.
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9#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Which of the particle decays in Table 32-2 occur via the electro:ibv0di 5bj;+y 7 7 ph*d(wj0brgktmouxk 0*gmagnetic interaction?y* jto jb(*g r;0pbxuib7d0hk0 :i5+mkv wg7d
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10#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Which of the particle decays in Table 32-2 occur by the weaks0fty2a8 7(*a0;amddy vly ms interaction?
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11#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
By what interaction, and why, does in /mc9 a:nddp8n tu*5oq; t.jt .syb,$\Sigma^0$ decay to $\Lambda^0 + \gamma$? What about $\Xi^-$ decaying to $\Lambda^0 + \pi^-$?
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12#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
The $\Delta$ baryon has spin $\frac{3}{2}$, baryon number 1, and charge states $Q = +2, +1, 0, -1$. Why is there no charge state $Q = -2$?
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13#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Which of the particle decays in Table 32-4 ocl(g ed4di2r85rpne c5 cur via the electromagnetic interaction? gn82drrdi554ep( c el
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14#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Which of the particle decays in Table 32-4 occur by the weak inter.6qm4 hymnlt9 vtt e -p1,o8avaction?
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15#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Quarks have spin $\frac{1}{2}$. How do you account for the fact that baryons have spin $\frac{1}{2}$ or $\frac{3}{2}$, and mesons have spin 0 or 1?
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16#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Suppose there were a kind of "neutrinolet" that was massless, had ckh1uakq/ye k4,mj sw)i5v.*kq d.d8 no color charge or electr)i se*.yu.dvh qkk/,mdkc8j4 a1 q5 kwical charge, and did not feel the weak force. Could you say that this particle even exists?
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17#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Is it possible for a pabex-p3)kk .vpvj9df ,xh1bi ;rticle to be both
(a) a lepton and a baryon?
(b) a baryon and a hadron? 
(c) a meson and a quark? 
(d) a hadron and a lepton?  
Explain.

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18#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Using the ideas of quantum chromodynamics, wouwxk givxb 1ey3/ d+y z/bz.5l)ld it be possible to find particles made up of two quarks and no antiquarks? What about two quarl. x/1 dkwey+b53yzz/g )ivbxks and two antiquarks?
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19#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Why do neutrons decay when they are free but not when they are inside the nuclpeqn c n90hl 9:oby q5pa53a0zeus?p0czbaep n:99qnol0 q 5y3 ah5
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20#
 
填空题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Is the reaction $e^- + p \to n + \nu_e$ possible? Explain.  

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21#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
Occasionally, the $\pi^+$ will decay by the following reaction: $\pi^+ \to e^+ + \nu_e$. Which of the four forces in nature is responsible for this decay? How do you know?
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总分:21分 及格:12.6分 时间:不限时
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